.stylelintrc.json

{
  "extends": ["stylelint-config-standard-scss"],
  "plugins": [
    "stylelint-scss",
    "stylelint-no-unsupported-browser-features"
  ],
  "rules": {
    "at-rule-no-unknown": null,
    "scss/at-rule-no-unknown": true,
    "indentation": [4, {"baseIndentLevel": 1}],
    "number-leading-zero": ["always", {"severity": "warning"}],
    "max-empty-lines": [1, {"severity": "warning"}],
    "max-line-length": [null, {"severity": "warning"}],
    "scss/dollar-variable-empty-line-before": [null, {"severity": "warning"}],
    "block-no-empty": [null, {"severity": "warning"}],
    "comment-empty-line-before": [null, {"severity": "warning"}],
    "color-function-notation": "legacy",
    "alpha-value-notation": "number",
    "selector-class-pattern": [null, {"severity": "warning"}],
    "value-keyword-case": ["lower", {"ignoreProperties": ["font-family"]}],
    "scss/no-global-function-names": [null, {"severity": "warning"}],
    "plugin/no-unsupported-browser-features": [true, {
      "browsers": ["> 0.5%", "last 2 versions", "Firefox ESR", "not dead", "not op_mini all"],
      "ignore": ["rem"],
      "ignorePartialSupport": true,
      "severity": "warning"
    }]
  }
}